'16 GMC Canyon: Cranks Over But Won't Start

In this video I have a look at a 2016 GMC Canyon that was towed in as a crank, no start. Didn't take long to see it had a fuel delivery issue. Low and behold the salt is the cause of this no start. The fuel pump control module got a little crusty we'll say. P12A6 is the code we're going after.
-Enjoy!
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Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained.

[@ibrahimbelhaj4180]

hi sir, I am from Libya, located in North Africa, and a follower of your KZbin channel. My main profession is a pharmacist. I run my own pharmacy to sell medicines in a small town called Jado. Car repair is my favorite hobby in my free time. That is why I follow car maintenance KZbin sites. I would like to I express to you my great admiration for the way you work and for the order, cleanliness and perseverance with which you run your own workshop, which I consider the standard standard for the workshop that I dream of owning one day.. my great greetings to you and my wishes for continued success, progress in your work, and happiness for you and your family...

[@92Pony]

8:29 - Its HIGH NOON!! I love how when Mrs' O calls for lunch, he says, "**We'll** be just a moment". He could be talking about himself and Josh, but I think he's talking about himself and us viewers. One of the little things that makes these vids fantastic!! Eric O cares about "the people". 😊😊

[@rmr5740]

Remember when the fuel pump control module was a relay?

[@fredkuhn165]

And a vacuum operated diaphragm that lasts 20 years

[@tangodad3320]

Damn I feel old now. Fuck I am old.

[@justinwatch]

And an accelerator pump was a simple tap of your foot... to the horse's side. 🤣

[@jima3129]

I remember when the fuel pump was mechanical, ran off an ecentric on the cam, and you could rebuild it by simply replacing the diaphragm and two check valves for about $3.50. We have gone waaaay BACKWARDS!

[@user-my3cm7ru1d]

Mine still are

[@Tommerd]

Every college or high school auto class should show your videos every single day.

[@JustinH72]

For those of us less informed. Would you consider a short video on your test light stash and how you decide which to use when? That would be stellar

[@garybrady7562]

Been watching for several years through my Roku, but unable to commit there. I have been inspired to be better at my diagnostic skills. I did buy a Pico 4425, smoke machine and quite a few tools I have seen Eric use to do a better job. Watching Eric is like continuing education, he does a great job of showing how and why. I appreciate the huge effort and thanks for sharing the knowledge. I personally have benefited from his channel and it is appreciated. Thank you Eric.

[@imtheeastgermanguy5431]

Was the tool expensive?

[@glencoughlan2209]

Glen from Australia here, you know what Eric?- you are a god damn kindhearted good-hearted gentleman, really the service you do and the manner in the way you deliver that with all the tongue in cheek anecdotes and humor is both refreshing and highly educational. As a backyard DIY grease monkey, I feel it when you start something up for the first time even though you feel you put every bolt back where it belonged and put the chain against all those marks - there is always that doubt isn't there? Eric, your a legend plain and simple for taking the time to share your pain and exploration into depths the cars owners dont want to. Good on you Eric - good karma to you always.

[@46fd04]

Great job. To all these truck owners, make sure you cover that area in Fluid Film, Rust Check, or Krown, every year. I drop my spare tire every year, and soak the mechanism and cable with Rust Check

[@Boodieman72]

I prefer Cosmoline

[@sparkie5571]

@@Boodieman72 to each their own! mainly just proper maintenance

[@alanmorrison3598]

Good advice!

[@jeremyt7722]

This! Used to work at a tire shop and had tons of trucks on a flatbed come in because they couldn't drop their spare tire. Unless you have some sort of cutoff tool with you, you're SOL.

[@joatmonjoatmon8911]

Eric, if I could find a competent and honest mechanic like you where I live I wouldn’t be a DIYer. What limits me is not having access to Service Data. Even with 8 vehicles of all different makes and models I still can’t seem to justify it. Keep up the excellent vids. I love it when I can tell myself “Here’s your problem lady!” 🤣

[@FliesLikeABrick]

Pretty much all the manufacturers have something like 3-day online access to their entire service data library for a reasonable price, I do that when needed for our newer vehicles (2013 prius) . For the older ones (2000 civic, 95 Ranger) , I buy the oem books used on eBay which is even better

[@kinglangren]

I use alldatadiy when I run into a big repair/ problem.

[@92Pony]

LOL! I too love telling myself that; "Well, here's your problem lady!" 😆

[@safffff1000]

@@kinglangren Yea me too, I just pay the $20 for the month and copy stuff

[@peglegtoo]

Even though we've seen you do this over and over, the recap at the end is great. One thing as always. Please detail how the connectors come apart, you can't believe the stumbling block this can be for diyers.

[@safffff1000]

Amen

[@FishFind3000]

I don’t mind seeing similar things done over and over. It helps drive the information home and gives you a thought process to work off.

[@safffff1000]

Have a show on clip disconnects

[@knurlgnar24]

In my experience they all disconnect the same way: The clip is designed to break off and then you zip-tie or wire them back together to make sure they don't come apart.

[@AlexBrowningPX]

I guessed pretty quick where this would lead. Those frame mounted control modules are such a common issue on these gms. I learned that because of you Mr o.

[@mayhemsmaster5050]

I love your diagnostics and watching you trace each individual possibility. Thank you Mr. O for another wonderful video. In closing I will leave you with one of my grandpa's favorite sayings... this is NY, on a quiet night you can listen to the Chevy's rust.🙏💜

[@randybeard6040]

When Toyota's first came out, they would Rust into almost over-night, the Japanese realized that their metallurgy needed to be changed so they started adding more Nickle and Chromium to their Metal to Resist Rust. Nothing is Safe in the Rust Belt, not even Mechanics as it Makes them Cuss and Skin Knuckles Often...

[@mayhemsmaster5050]

@@randybeard6040 OH I remember well, Toyota, Subaru, and Honda were in a race to see which would rot the fastest... especially up in the salt belt.

[@jeffreyhaynes5774]

@@mayhemsmaster5050 Everything rusted out,but the engines kept on running.L.O.L.

[@gregbarnett3141]

Just got home and what a great surprise! Thanks again for keeping the great content rolling!

[@chevboy4.813]

Ford had similar problems on their trucks. The new FPCM came with retrofit plastic spacers to install between the module and mounting surface to let water and moisture to drain to prevent trapping it behind the module. Of course the module was also mounted vertically, so that helps!

[@nickm6566]

Yup! Just replaced mine on my 05

[@deonc81ify]

I had to replace one on my 06 F150. I heard galvanic corrosion between the dissimilar metals was a problem too. Steel frame vs aluminum module case.

[@bradnoyes7955]

I had to replace the FPCM on my 04 a second time. The first one died before the retrofit came out, so the 2nd one was mounted exactly the same. The new one I installed came with the standoffs but I still doused it in fluid film, it ought to outlast the truck at this point.

[@MikeF421]

The new ones also had the aluminum case powder coated to help mitigate the corrosion

[@MikeBrown-ii3pt]

With all of the better options available for rust protection today, I can't believe that Zeibart is even still in business! Personally, I prefer my "fuel pump driver module" to be an eccentric on the camshaft but, I'm just a grumpy old fart lol!

[@craiggoodwin9704]

Eric, great explanation of the problem, the use of a scan tool, and how you arrived at your final determination. Also appreciate your discussion about what to touch and what not to touch. Thanks for Sharing!

[@robertcoker1591]

I just found your channel a couple of months ago and I really enjoy looking through the last few years of your videos. I am a semi retired mechanic of over forty years both retail and the last twenty five as a fleet mechanic for our Fire Department. One of the things I like is that you talk like a mechanic should. Today’s “techs” don’t know what a BFH is and shitcan it so forth. Keep up the great work my friend.

[@markchidester6239]

It has been a lot of fun watching the business and family grow. Feels like he is a friend who has no idea who I am.

[@rick980]

I love how you take the extra checks to be absolutely sure that what you suspect is the problem. I imagine you have made the wrong decision one or two times before!. Gr8 job once again.

[@carlf8291]

Great video your a smart man we need more mechanics like you.

[@chrisE815]

Techs are incentivized to swap parts, not produce root cause diagnostics. 80% of the time it works fine, 10% of the time the parts cannon is fired (lots of labor and parts sold) and 10% of the time, they are forced to escalate to another tech and involve someone with Eric's skillset.

[@davidcornell9090]

You do a fantastic job of diagnosing the problems and fixing them properly. Thanks again for another job well done.... love the videos keep them coming...

[@c0mputer]

How many of you guys used to listen to Click and Clack? Miss that show.

[@kb9knd]

Back in the 1970s I was introduced to low impedance voltage testers. The brand name was Wiggy, witch is now synonymous with solenoid voltage tester from many brands. I have an Ideal brand. Works great for voltages from 90 to 600 ac/dc. Today I use a Fluke DMM that has dual impedance testing. 20M ohm and 3.5K ohm. Works great. Fluke has 3 models with this feature. The 114, 116 and the 117. I have the 116 witch has features like temperature probe, micro amp scale for measurements of flame sensor current and min/max recording witch I use to troubleshoot signals that last 1/5 of a second. Well worth the money and have never had a problem with it. I guess I should add for those new to troubleshooting, this will greatly reduce ghost voltages.

[@lynnmiller5183]

Good going Eric Design a corrosion resistant plastic box and put all the modules in the one location 👍

[@sonofz650]

Thanks for sharing your knowledge, Eric, never too old to learn.

[@larrywalker3137]

Well Eric I'm going to tell you I think you're a brilliant mechanic I enjoy watching your videos and how you determine what is wrong with them wish I had that ability but I don't

[@gregorynpappas]

I watch because I love watching impeccable logic solve a problem. well done, as al;ways!

[@GarnConstructionInc]

Good job Eric! Testing the control side is a little more labor to prove the faulty module. Looks like your also checking wire/connector integrity, corrosion and fitment. Your giving the customer their moneys worth. They would probably pay the same for "parts grenades" thrown by some shops wanting a quick fix to get it out the door asap but bill them again if they have to come back for the same problem.

[@jamespearce7954]

Excellent diagnosis Mr O. Keep it up.

[@scottyparker2534]

Eric appreciate your troubleshooting expertise and I really appreciate your honesty you're one in a million there appreciate you and mrs. Oh you're good people

[@garyhalsey2562]

Your video have helped me on my own vehicle good content

[@lvl10cooking]

I like to watch while waiting on tickets to come in. I have learned so much between you and Rainman.

[@adamsfamilynfun1409]

Huge thanks to your videos mr. O, I’m ordering your same scan tool for future projects. I’m just a diyer, but you e given me more confidence to want to find the more complicated fixes. Keep the great content coming!

[@daemonhat]

love the videos, learn something every time. and as the owner of a car with direct injection, on my little 2.0 turbo it damn near sounds like a diesel.

[@billloomis3907]

Good explanation on your diag. Thanks

[@chrisforker7487]

Great job figuring out what the problem was!

[@josephchamberlain9129]

Your are the master of scan tools. Your logic surpasses the limits of any scan tool.

[@guyfranks4354]

Hey Eric, I had a 1978 International Scout II that was Ziebarted. My inner rear Quarter Panels rotted away. I used zip ties and mechanic's bailing wire to keep the outer Quarter panels from flapping. It was my understanding that to not void the warranty an annual "Inspection" had to be done near the anniversary of the procedure to maintain the warranty. The "Inspection" was to do the process again totally. The "Inspection" clause was in the fine print of the contract and most people didn't have it done. It also applied to the original purchaser only. I got my Scout in 1980 with 24,000 miles on the odometer. I kept it for 9 1/2 years and finally junked it. I enjoy all of your videos and await the next one.

[@jimmyaber5920]

International hauled bodies in white across town plant to plant. They were not dipped or rustproofed. You live in Arizona and never leave your ranch and your scout or IH pickup would rot through.

[@harrykrouse3999]

Back in the late 80s, my brother-in-law bought a 1979 scout from the original owner ,who was a lifelong friend of his stepfather. The original owner had used it as a plow truck, and it actually still had the snow plow on it. It was a rust bucket when he bought it, and he attempted to do a restoration on it and put it back on the road. He started to take it apart and then lost interest in it. It sat on the farm for another 10 years, and when they tried to haul it to the junk yard, I believe the Frame broke in half. It was one of the most rusted vehicles I had ever seen in Maryland.

[@pauldhiman8369]

One of the smartest of the smart dudes on KZbin hands down👨🏽‍🔧👍🏽

[@joejohnson7097]

Love the way you do diagnostic the hole circuit because if one of the other circuit not right

[@alfredrochefort8239]

Good video, very informative! Good to hear the noon siren working!

[@daviddamico4288]

Nice work Eric, you know your stuff really well….

[@sargefreedom1578]

People get intimidated by schematics and circuitry. Eric makes it easy. Having the correct tools and patience makes it doable and actually enjoyable when you succeed in making a repair. I had some good instructors in the USAF. Well done Mr. O

[@dano336]

this might sound crazy but at 8:33 the half second siren reminded me of the noon siren at my grandmothers house back in the 60's in Perry NY. good to hear it still being used

[@markchidester6239]

Lol, I thought to myself, must be noon

[@kevinrenn9123]

Having grow up in a factory town with a noon whistle, it brings back memories for me too

[@stirlingfromla]

Before it was the Chinese balloon warning

[@tomtheplummer7322]

I was thinking it was The Purge siren 🚨 alarm. 🤷‍♂️😏😆

[@sydecarnutz972]

The little town I grew up in had the air raid siren over the Fire department. They'd use it to call the volunteers.

[@paulravitsky2898]

Guess I should get a spare for my '12 Colorado before mine fails. Thanks for the video!

[@geordiegixxer]

Love your diagnosis skills man. You're like a walking oracle 👍

[@letzrockitrite8469]

So good.... no questions comments or concerns with you Eric O.

[@williamgroel2880]

Good diagnostic 👍😎

[@wingman8447]

Nice find nice fix. I’ll be looking for that. Good info. Thank you

[@patrick_kyker]

Excellent diagnostic advice. I have no clue what it means but it sounds excellent.

[@livewire4495]

GM design priorities are Assembly driven. Service and practicality are always a Lower priority. They locate parts and modules based on ease of assembly, balancing the line processes, and reducing assembly time. Salt Sucks 😁 I love Tennessee

[@jdelbrid]

Nicely done, as always. We have a Yukon XL, and when I saw that spare tire in your way, I knew exactly why you didn't move it out of the way. There's an opportunity for a whole video series on that system. Ours has a lock, and it doesn't function when you are stuck on the side of the highway with a flat. Way to go GM!

[@tomtheplummer7322]

That spare makes me want to get a dozen donuts 🍩😏😆

[@thecuss6817]

We just bought a 2014 Yukon XL Denali, and the factory lug wrench did not fit the lug nuts on the vehicle, had some fancy wheels. Plus most of the lug nuts were torqued way too much.

[@garyisaac5634]

Eric, You are a great example as a troubleshooter, mechanic and human being. Thank you for taking care of people like you do, especially your family and cat. I must tell you this video made me laugh so much taking me back to days in Michigan I worked with rain/snow/salt dripping the whole time the vehicle was in my bay. After that laugh, Ziebart took me out laughing. Then we had some completely sprayed with oil on everything visible from the bottom of the vehicle looking up. The only thing you missed on this was leaking valve cover gasket leaks, power steering leaks, rear main leaks, Trans. leaks and oil pan leaks. Get out of it while your young Son. 🫠

[@jamesbruno5896]

Nice job Eric!

[@davidshellhaas1730]

Another great diagnostic video. Thank you. Appreciate all of them!

[@stationaryenginesworldwide]

Great video Eric ..thank you for my evening entertainment !

[@paulfiebke3909]

Thank God I live in TN. Don't have that problem, keep up the good work

[@christinamoneyhan5688]

It just amazes me the amount of electrical issues these so called wonderful computer controlled machines cause.

[@rogerchevelle8543]

Great Diag Eric o. Thanks for the video

[@DIYDaveOK]

Thanks as always, Eric.

[@ejwxb2561]

It amazes me how the corrosion gets through the extra undercoating like that. Here I am in Fla where everything rusts, spraying the crap out of my vehicle undercarriages. .. guess I will go out and take a closer look at my rigs. I look forward to these videos Eric - learn something from each & hope youse never tire of making them!

[@raymondparkhurst3047]

Great Job ,like your sharing

[@graemepaul8748]

Great videos, plenty of content in 20 mins (give or take), ideal for a coffee break.

[@frederick.jackson]

Nice work. Thanks for the lesson!

[@danielryan5447]

Great video guy thanks for sharing

[@anthonysmith7297]

WOOOOOOT.....found one from 30 days ago....gaonna watch and enjoy !!!

[@ronwatson4902]

I've been waiting on you. Great video. Thanks

[@sheerwillsurvival2064]

Excellent video as usual 👊🏻👍🏻

[@christopherfranz1547]

The fuel pump driver module on my southern salt-free 2006 F-150 was rotted and the metal part of the case was actually cracked in half and deformed. I happened to notice it when I was installing some trailer wiring so I snuck a new one on there before it actually failed. It turns out that Ford decided to put the bare aluminum case of the module right against the steel frame of the truck. The aluminum against steel causes "galvanic corrosion". Some of the aftermarket ones come with stand-offs that address the Al+Steel contact issue, so I went that route ($40) rather than spending $220 on an OEM part that comes flawed from the Ford dealership.

[@jimbattles9642]

your speech has really gotten better over the past few weeks.

[@carlevans7966]

Good job

[@deathklock333]

Reminds me of the older corvettes when the mounted the ecm in the passenger wheel well real great spot

[@kakeetoalex9924]

Normally the scan tool would tell me where to go en i simply would replace the darn module en not have to go thru all those tests. You are a whole lecture, complete with GPA marks..👌👌

[@robertlacob8831]

Another quick, accurate SMA diagnosis by the great Eric! This owner should be happy his truck was towed there instead of a GMC dealer, where he could've been soaked for a bad ECM or other!

[@goptools]

Mounting the ABS module on the driver's side, between the floor and the frame, was another great design decision. Have you ever seen one of them that wasn't destroyed? Thanks for the video!

[@whiteslick00]

Thanks for the videos🎉

[@jamesmilton2736]

Good job 👍

[@klumpy103]

Great diagnostic as usual, from new skool to old skool, Taking us through the whole diagnostic testing process. It might seem a simple circuit but it's a great teaching aid into how these smaller systems can be very much alike in how you approach them,. Just think...without the Crusties we'd never know 🤣

[@robertbradley4871]

Good job i learn alot from ur vudeos i am a machanic my self and i drive a ford nothing else because fords are easy to work on and the parts are cheap great video

[@ChrisWilliams-pu8pj]

Great job as always!

[@2405jacko]

Good evening Eric!!

[@joeyf504327]

the air pump and suspension control module were the bane of our existence on our 07 sububan. Finally got rid of her at 225k miles!

[@andyellis307]

Another very interesting video Eric nice one buddy

[@usethenoodle]

The Chef Ramsey of Auto Repair!

[@tobywilliamson5213]

Had a no start other day on a 2010 Colorado , found a broken wire from ECM to fpdcm , wasn’t bad to diagnose but I told the kid working on it who works for a parts store it’s not always a part failure, you have to diagnose!!!

[@chosipian]

love your channel

[@jamesterrill1938]

GREAT VIDEO...THANKS

[@American_Creed]

Great videos Eric. You edited out the noon horn. I love the noon horn. Everyone loves the noon horn or should.

[@Ed-ip2sg]

Good at reading the schematic. I remain overwhelmed by most of them.

[@billmalec]

Brilliant place to store sensitive electronics there GM. That's as good as the little pool they make to bathe the fuel sending units in.

[@spelunkerd]

Aluminum housings don't seem to survive long in that location. I don't know if it's straight up corrosion or a galvanic reaction protecting adjacent steel, all bolted together and covered with moisture. That area gets wet and stays wet, so you've got all you need for local galvanic reactions, with the module housing representing the sacrificial anode.

[@chrismechanic2000]

love the way they wax oiled the whole underside apart from above the spare wheel.

[@ianjeffery3762]

Another great video. Thank you

[@fasst5511]

I've always thought about moving up north because of the oppressive heat we have here in Oklahoma but after seeing what apparently your winters do to vehicles in just a few short years I think I'll stay here. Unbelievable how fast they rot out from rust and corrosion.

[@PedroRodriguez-hy5ty]

Your the man eric o

[@williamlocascio8946]

Eric again thanks for the heads up on Z-fart, it seems counterintuitive until it doesn't and we get our fair-share of road salt in Northern Indiana

[@knurlgnar24]

Eric, you should get a DMM with a low z mode. That's specifically to eliminate those 'ghost voltage' issues. There's other ways around it of course but they make meters specifically to eliminate that issue.

[@glynwatkins9968]

Afternoon Mr O

[@richdelgatto2522]

SMA is the GM pickup channel now. We need some Ford or Dodge.

[@JackdeDuCoeur]

Nice work

[@eastcoastrifraf]

Been with you since the beginning, glad to see you didn't pull a ETCG and start flashing the $$$, swag, and your keeping it the same. I did buy that flashlight you got there, I am impressed with it. Thanks. If you can ever recommend a under the hood 6' light, let me know.